Self-inking stamp



M.'RUMPF AND W. E.YN|MZ.

SELF. INK ING STAMP. APPLICATION FILED FEB. 2.1920A Patented Oct. 19, 1920.

3 SHEETS-SHEET 1.

M. RUMPF AND W. E. NIMZ.

SELF INKING STAMP.

APPLICATION FILED FEB. 2. 1920.

1,356,172. `Panama 00u 19,1920.

3 SHEETS-SHEET 2.

, 8C BECIEAED B @Mw/cw www.

ZZezr M. RUMPF AND W. E. NIMZ.

SELF INKING STAMP. APPLICATION FILED FEB.2.1920.

Patented 0@t.19,1920.

3 SHEETS-SHEET` 3- MAX nUivIPr AND wILLIAivI n. NIMZ, lor crIItLsIGro,v ILLINOIS.

snLnINKING STAMP.

Application filed February 2, 1920. SerialiNo. 355,877. Y

T all wlw/m it may concern.'

Be it known that we, MAX RUMrr and lWILLIAM E. NIMZ, citizens of the United States, residing -at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful lmprovementsin Self-hiking Stamps, of which the following is av specification, reference being had; to the accompanying' drawings, forming a part thereof.

The purpose of this invention is toprovide an improved self-inking stamp, adapted for hand operation and for carrying a multiplicity ofdetachable and interchangeahle stamps, and without regard to the multiplicity of stamps or means for carrying such multiplicity, to provide an improved mechanism for inking. the stamp in the initial portion of its descentand withdrawing the inking pad out of the path of descent without widening or dragging motion upon the stamp. lt consists in the elements and features of construction shown and described as indicatedin the claims. 'i

In thek drawings- Figure l is a front elevation of a stamp embodying this invention.

2 is a right-hand the same. v

Fig. 3 is a sectional detail side elevation of certain parts concerned in the movements.V

llig. 4c is a rear side elevation of the entire structure.

.Fig 5 is on Fig. 4.

Figs. 6 and 7 are similar sections showing different positions. of the parts. Fig. 8 is an end view of the rotor stamp 'carrier having a piece hrokenrout to disclose interior parts.

Fig. 9 is a section Aat the line, 9-9, on Fig. 8.

end elevation of a detail section atthe line, 5-5,

Fig. V10 is a section at the line 10-10, on`

Fig. 9.

.he structure shown in the drawings comprises a frame or supporting structure consisting of end standards, `l,y l, and cross- `heads, l?, a plunger comprising side arms, y

2", r`which' 2, 2, cross-heads, 2a, and a stem, houses a retracting spring, 3and'is provided at the upper end with an operating handle, 2%V They cross-head, la, of the stem has a boss, 1, constituting a guidev hearing lfor the stem, 2", 'of the plunger, and seating `slisanitation of Letters raient. Panted oet, 19, 19220,'Y

a stop pin, 4, for the lower end of the spring,l i

3, the stem, 2", being slotted at 2d, toaccommodate the pin in the stroke of the plunger; In the lower ends of the plunger arms, 2, there is journaled a shaft, 5, ,for ay rotor stamp carrier, 6, which -is mounted on said shaft, 5, rigid therewith between the two "I arms, 2, 2, of the plunger; and said shaft is extended heyondsaidarms forming trun* nions,A 53,52 to afford guidance forthe plun ger in the standard, loeingeiitendedy out through the said standards which are 'vertically slottedas seen at 1d for that purpose. The ink pad carrier comprises theside arms, 7, 7, connected by the cross-har, 7a. Said ink pad carrierishung upon the shaft,5,

for pivotal action thereabout, having' limited means of l'ostmotion vertically with respectV thereto by means of the elongation of the 7b, by which it is thus pivot#r` The ink pad cary apertures, 7b, ally hung on the shaft.

'rier is controlled in itsA position and. move'- ment by links 8, 8,`wh'ich are pivotedfat their upper outer4 ends upon arms,` 1e,gpro,.

' iecting rigidly rearward ,from the 4standards, 1, 1, respectively ata positionin the height of said standards for locating the said pivotal connectionl of the links somewhat above the level of the shaft, 5, at

highest position so that said links trendy downwardly and forwardly for theirfe`n gagement with the sidearms, 7, 7,`of the ink pad carrier. f Said engagement is refectedloy means of studs, 8b, projecting from the links, 8, respectively and engaging notches,

7e, in the side armsy of the inkpad carrier, and studs, 7f, projecting inwardly from they sidearms of the ink pad carrierfengagingr slots, 8e, inthelinks respectively. For guiding the'ink pad carrier in its vertical move-,

ment and for limiting that movement j upfwardly and preventing side swing,r at apart of the, path ofthe up-and-down movement, studs, Yare projected from thev side. arms,

"7, engaging slots, 9.in stop blocks, 9, which ioo are mounted on the .inner sides of the standards,v1. .These slots, .9?, open rearwardly at a certain limit of the downwar'dmovement ofthe studs, d, -as seen at 9", to permit the l ,inkf pad carrier to swing rearwardly at the proper ytime for clearing the path" of the stamp as hereinafter explained. lA spring, 10, coiled around the pivot shaft, 8", by which Y1both the links, withthe standards, 1, l, respectively,

8, 8, are connected.

`hav- `or stamp. T he operation j far described is as follows:

ing the ends, 10a, stopped against screws, 8, set into the links respectively, and having its middle part which is formed as a loop, 10b, stopped against the cross bar, la, of the standard, operates to hold the links normally attheir upper and inner limit for upholding the ink pad carrier at the position shown in Fig, 5, that is, stopped by the studs, 7d, reaching the upper end' of the guide slots, 9a, of the stop plates, 9, the same engagement,that is, of the studs in the slots mentioned,`serving to limit the inward swing of the ink padcarrier; and the slots, Se, in the links, 8, and the notches, 7e, in the side arm, 7, orp the ink pad carrier are positioned and dimensioned so that the studs, 'f and 8b, respectively, are stopped at the ends of the .slots and. notches respectively, in the same position of the parts at which the ink pad carrier is stopped with respect to the standard by the engagement oi the studs, 7d, in the slots, 9a.

The stamp carrier, 6, is a rotor upon the shaft, 5, for rotation thereabout, said rotor having a multiplicity of paraXial seats or faces adapted each for carrying a stamp, so that when the stamps are thus mounted upon the rotor, the rotor has a multiplicity of paraxial vprinting faces. The means hereinafter described serve to lock the rotor with any selected printing face, or seat for-fainting the stamp, at the lower side,-that is, positioned to be advanced or pressed downward by the plunger tor printing. ln this operation, the mecha` nism thus far described operates for inking the stamp, withdrawing the inking pad from the stamp and clearing the path of the stamp for printing, unaffected by the fact that the stamp carrier has a multiplicity of ltaces; that is, this mechanism operates precisely las if it were but a single printing face of the part thus mounted At the initial position or position of rest, `the plunger is upheld bythe spring, 3, upholding the stamp carrier; the ink pad carrier is upheld by the spring, 10, operating through the links, 8, being stopped and limited as toits upward position by the studs, 7d, reaching the upper ends of the slots, 9, in the stop blocks. 9. At this position the ink pa d, 7F, is designed to be slightly below position `for Contact with the printing face of the stamp on the lower side or" the stamp carrier. Upon the initial depression of the plunger. the printing tace ot' the stamp moves .down into contact with the upper face oiE the ink pad and becomes inked; and

in the further depressionnof the plunger the ink padcarrier is forced downward by the pressure of the stamp upon the ink pad` further insuring the thorough Y stamp while the ink paid carrier moves downward until the studs, 7d, reach the inking yof thel point of lateral or rearward escape from the notches in the slots, 9a, of the blocks, 9. The upper end of the slots, 7", in the plunger side arm in that downward movement, nearly but not quite reaches the shaft. 5. In this downward movement of the ink pad carrier, the engagement of its side arms with the links, 8, by means of a stud, 8b, and 7f, in the notches and slots, 7e and 8e, respectively, causes the links, 8, to be swung downward. and outward while said studs travel in said notches and slots, respectively; the studs, 7d, having reached the rearward outlet, 9b, from the slots, 9, further depres-v sion of the plunger causes the links, 8, to control the movement of the ink pad carrier bythe engagement of the studs, 8b and 7i, in the notches, 7e and slots, 8e, respectively, and swing the ink pad carrier rearwardly. The links, 8, have at their inner or forward ends, cam projections, 8g, facing upwa dly, an d the lower ends of the plunger side arms, 2, have coperatingprojections, 2g, which encounter said cam projections, 8g, at the same point in the action at which the studs, 7d, reach the rear outlet, 9b, from the slot, 9`-; and in the rearward swingwhich the links, 8, are calculated to give tothe ink pad carrier as above described, the cam projections, Sg, and 25', coperating to force the forward ends of the links, 8, and thereby to force the ink pad carrier downward while it is swinging rearward, thus causing it to withdraw obliquely downward and rearward from the face or' the stamp, avoiding the dragging `or wiping of the ink pad upon the stamp. Continuation of the downward thrust of the plunger carries the ink pad carrier entirely clear of the path oit the stamp, as seen in Fig. 6, while the stamp descends to a position for printing, as seen in that figure. Upon the operators release or". the plunger, the spring, 3, returns the parts to their original position, reversing all the movements above described in the reverse of the order described. Y

The rotor stamp carrier, 6, is desirably constructed wi h sheet metal heads, 6a, mounted rigidly on the shaft, 5, and further connected together. by stamp holder seats, 6b.' F or the purpose of receiving the stamp holder seats and securement thereby, each or the heads., 6, is made in general polygonal form, being shown ten-sided, (one side being special .in form, for the purpose et' accommodating a date stamp as hereinafter explained), and the sides, V66, being separated by-notches,.6-C, which Vhave their opposite sides divergent inwardly, or at least with such trend that the ytwo opposite edges of the projection between two consecutive notches are convergent inwardly, making the projection dove-tail in form; and the parts, 6b, which form the seats for the printing stamps and which tie the two heads together, are'made of sheet metal, folded as shown so as to have longitudinal or `lateral iianges, (Sf, pro] ecting converging; at the inside said heads reliexed outwardly against the inner surface thereof, thus forming hooks by which said "tie plates or. stamp seats are engaged securely withthe heads,

6. For stiffening; the. tie platesw'or stamp seats longitudinally,they may be provided with a longitudinal coi'iugation, 6, projecting inwardly as seen in Fig. 8.

Stamp holders, 12, for holdingV rubber stamps or the lil{e,`13, are formed of sheet .as shown in Fig. 8,`to' formv lateral longitudinally `extending,1 double fold metal folded flanges, 12a', and backward orinwalrdly eX- tending or convergingflanges,12b, dimensioned to 'fit outsidetlie dove-tail -proiection ofthe head and the connectorv plates` or stamp seats A, 6b engaged therewith'as de-` scribed,-that is to say, said dove-tail orl inwardlyconverging iianges ofthe stamp plate are spaced to engage outsidethe 'dove- Vtail or inwardly'converging` flanges. of the.

asseen in Fig. 8. vIt, Vwill beseen that the ystamp holders, 12, are

tie plates or seats 6b,

adapted to be slidingly engaged withrthe seats ortie plates, 6", and are thus readily.,

removable or Vreplaceable, for substituting .one stamp for another as maybe required fromk time to time.k

@ne sector of the rotor stamp carrier'is desirably devoted .to carrying' a. stamp, and such datingy stamp is shown in Figsf andv 9, comprising` a shaft, hav- .ing` its ends engaged in the two heads andl having; mounted .upon it Vbetween stops Vor' y f n. p Y,

Y the' rotor (includingthe dating; stamphfthe cranlrV handle hasitsradially extending arm orlever' double,-that is, comprising a portion; 26?', rigid lwith the spacing collars or. sleeves, 15, four rotoi"l 16, 17, 18 and 19.each haviiigtwelve prinJv ingr .faces and correspondingly positioningr shoulders,laterally formed upon lateraleX-j.

tensions, y16?, 1.7,'18L and 19a. rotor, 16,. has upon ten Aofits faces figures denoting ten consecutive years, the. rother ltwo .viations for faces being, blank Afor" convenience."V

iigures from Orto 9 inclusive, ther-.other .two faces being blank for convenience., rotor, 18, has upony three of .its'faces the numerals, 1, 2 and 3,' the vremainder being bla-nir for convenience and the rotor, 19, has upon its twelve faces theV4 proper abbrei'ear side of the'instrument "byti'irninif` the rotor by the means hereinafter described;

back or inward, and angle. of convergencejof formed, having j I n n Aing.,T the rotors,

adjustec for a ,dating The rotor', 17, has upoiir ten of itsk faces numeral lThe twelve `months V of the year. Vlilach of these rotors fis accessible, crean be made? accessible at either the `i-ofwafrd or A` and eachy of the rotors, 16, 17, 18 and-19,

canfbe adjusted about the shaft, 15, 5to bring lwould beL the bottom side when-fthe entire ictor,"2,'isadjusted to set the,l dating stamp as a whole at thelowerside. 'For' retain- A 15, 17', 18 and 19, accurately at the `position to which they'may be thus given date *positioning plungers, 20,20, 20, 20, are provided., each havinga' 'flat end adapted to contact ,the flat y'shouldersyof thek lateral projections, 16?,

17, 18V and 19, these plungers beingy mounted in a casing, .21, which is securedv in the. rotor, 6, between the heads, 6, by the vrengagement *of tenons, 21%, atthe ends of `'the casingjinsuitable apertures formedin the heads, (in, as may beV clearly understood *from lFigs. 8 and 9. Springs, .22, around 4the stems 'of the plungerawQO,

the;shoulders,20b,ff0f the plungers thrustV` "16,717, l18 and119,t`o accurate positionand,r`

'holdi rthem at that position with sufiicient lcertainty for accurate performance of the work of stamping'the date.

stampv carrier to bring any desired stamp at printing position,` andfor 'indicating what stamp 'is at printing position without operatingthestamp for printing as would be .necessaryin the absence of .any special provision because the stamp is of course concealed by the inlring pad and cannot be examined directly. For

shaft, 5, isfprovidedv with a crank handle, 25, at they right hand; and backA of saidl crank handle there is "mounted and made rigid fwithithe standard, a notched dislr, 26, having' in itsy periphery as' finany equal-spaced these purposes the notches as there are stamp-carrying faces on cate portion, 26h, pivotedto the lrigid ,meme ber, 26, near .the shaft, and provided at its upper end with reacting against the head of the casing and against shaft, and a duplithe operating handle, 27,.

the plunger-s againstY the'r shoulders, 161, 17a,

V118e' andv 19, thereby bringingjthe .-rOt'ors, y9o 'l and `with a tooth, 2S, for "engaging the notches ofk the disk, 26, ythat tooth being formed' by proj; ectionfvhieh is rbent inward froinvtlie arm, 27", and over' the endoffthe earm`,27 -ai'nifextends inward for engage.- nient Vof the notches, so "that it is stopped againsttheinnerside of the arm2t,'when is engaged with the notches, a spriiig,l29,

seing provided, tending to hold it infthis ,n position and adapted toyield wlieiithehnob` vis 'pressed inward to,` disengage the tooth fromy the notches. y seen that 'the rotor stamp carrier can ,beadjusted to bring any desired face at printing position; and in order to indicate to the op erator what stamp is at printing position, there is provided aiiiiidex segment, 30, havingradiai arms, 3l, by which it is pivoted about the shaft, 5, said segment extending over the forward part oi the rotor, and having on its exposed surface index lilies or graduatioiis tor indexing the several stamps which maybe carried by the rotor. Desirably, a movable index card or sheet, 319'-, is provided engaged with flanges, 3Q, on the index segment, which ca'ii'be reinovedi'ior notingr upon it the title of any particular stamp which may be placed in the rotor, which maybe erased and substituted by any other title when another stamp is substituted ior the one so indexed. From the cross-bar,

2a, o't the plunger, 2, an index point or read` ing linger, 2X is projected to overhang the index segment, and meansis provided, now to be described, for rocking the index segment so as to bring into registration with the index finger the particular index line corresponding to the stamp whichl is .at

printing position. The means tor-this purv` pose comprises a pinion, 35, on the shait, 5,

` Which meshes with a gear segment, 36, pivoted at 37, on the lett hand side arm of the `ilunoer havin@v a lever arm 36a which extends from the ulcruni oppositely to tne segment )rovidedwvitli'a slot 36h which enei 7 a 7 `gages a stud, 30X, progecting rroin the corresponding` side arm of the index segment,

the gear segment having Within a limited arc the number oi teeth of the pinion, 36, and that are having its fixed radius substantially the, distance of the stud, 30X, from the tulcrum oi the segment; so that said segment,

30, Will be rocked by the full rotation ot the shaft, 5, andthe pinion, 35, through an arc about the shaft, 5, sulicient to carry the ull number oi index lines successively intoregistration with the index finger. lThe movement of said index segment beingk propori tional to the rotary step movement of ,the rotor stamp carrier, the eiitirerten WorkingV positions of the stamp carrier, may be each n correctly indicated Withinthe limited arc of ,o

the index segment.

We claim: 1. ln a self-inlnng stamp, in Vcombination with a 'frame and a plunger mounted yfor re- Y ciprocatioii therein, a rotor carried by the, plunger having a multiplicity of paraxially extended faces, each adapted for the mountineV thereon ot a stamp; means Vtor ifotatively adjusting the rotor about its axis on the 1 lune'er and two coderatino'- elements of i an indicator, oneliaving a reading point and the other graduated to be read, one of said elements being fixed with respect' to the plunger and the other mounted for oscillatioii past' the iirst, a pinion on the rotor ,prisinrr a vvitli therotor extending across in front of 'the same and having its, exposed Vsurface foregoing, the oscillating element of the inc ,dicator being mounted for oscillation about the axis oie the rotor; a pinion on the rotor coaxial therewith; agear segment journaled on the plunger with which the pinion meshes, and operating` connections between theV gear segment and said oscillating element for rocking-the latter about 'the axis of the rotor by the rocking of the segment about a diiiierent axis. y

3. In thestructure defined inclaim 1, the graduated element being a seginent of a cylinder Vco-a al with the rotor, extending across vin iront of the saine, and comprising a removable surface sheet having spaced index .lines subdividing it according to the 4. In the structure defined in claim'l, the

graduated element oi the index device being the oscillatingelement thereof, and comseginent of a cylinderco-axial subdivided by lines spaced circumferenstep movement-of said element derived from tlierstep movement oi the rotor in its adjustment or positioningth'e desired face at printing position.

5.' ln the structure delined in claim 1,'.the operating connections between the rotor and the' oscillating-element of the index device, consisting of a pinion on the rotor, ageai' segment with which the pinionmeshes, havingv alever arm Yby which it isfpiv'oted on the plunger, .a cylindrical segment extend' ,ing in an are iront of the'rotor having radius arms by which it is pivoted about rthe rotor axis and a lever arm of the segment arranged to extend alongside one of the radius arms, kone of the alongside parts having a slot and the .other a stud engaged with ther slot for communicating rocking movement to the index segment from the gear segment.` Y .A

6. .ln itself-inning stamp, in combination with a supporting frame, a plunger mounted for reciprocation on the frame ;I a stamp carrier carried byftheplunger; an ink pad carrierpivotally carried by theplunger having Vtiallykof the y,rotor correspondingly to the lost motion connected therewith;v an ink-` pad-controlling link pivoted on the frame at aline offset laterally from the path of reciprocation oit the pivotal connection of the-ink pad carrier with the plunger, and trending operating abutments on the swinging movement downwardly from its said pivot, and having lost motion connection with the ink pad carrier at its lower end; a spring acting on the link'to cause it to uphold thel ink pad carrier, a guide-way on the frame for the ink pad carrier, the latter having an abutment which engages said guideway in the initial part of the descent of the plunger, the guideway having a lateral opening for the escape of the abutment therefrom at the limit of the lost motion connection of the link to thek ink pad carrier, whereby beyond saidlimit in the descending movement of the plunger, the link; controls the ink pad carrier by swinging it laterally about its fn'lcrum or pivotal connection with the plunger, and coplunger and ink pad carrier which coperate cam-wise for relatively depressing the ini pad carrier with respect to the plunger `in the lateral y of the ink pad carrier.

7. In a self-inking pad, in combination with a frame, a plunger mounted for reciprocation in the frame, astamp carrier carried by the plunger, an ink pad carrier suspended from the plunger and having lost motion connection therewith permitting relative vertical movement with respect to the plunger; 'a spring-operated link pivoted to the frame at a line offset laterally from the path of reciprocation of the pivotal connection of the ink pad carrier with the plunger, and trending downwardly from its said pivot, and engaged with the said ink pad carrier for yieldingly upholding the latter, coperating stops on the frameand the ink pad carrier to limit the uplift of the ink pad carrier by said links, said coperating stops being adapted also for guiding the ink pad carrier to limit it to a--vertical path to a limited distance of descent4 from the position at which it is stopped by said cooperating stops, the link having lost motion connection with the ink pad carrier for limited movement of the carrier-connected end of the link laterally with respect to the plungers movement, the several engagements being proportioned for terminating the lost motion between the link and the ink pad carrier, at the same time that the engagement against lateral movement of the ink pad carrier terminates.

8. In the structure defined in claim 7 foregoing, coperating abutments on the plunger and link for causing the link to be ,depressed at its end which is engaged with the ink pad carrier, and to depress the ink pad carrier, relatively to the plunger in the movement of said end of the link laterally with respect ,to the plungers movement.

9, In a self-inking stamp, with a plunger, a'rotor for carrying a multiplicity of stamps, comprising shaft journaledon the plunger; similar polygonal heads rigid with the shaft` said heads hav-i ing notches between the'consecutive sides of their polygonal outline, the two sides of each notch being'` inwardly divergent, each side of the polygonal outline is the end of a dove-tail projection, and tie plates connecting the two heads formed for seating on said sides of the polygonal outline, and having anges which engage the dove-tail projection. n

, 10. In `aself-inking stamp, in combination with a plunger, a rotor for carrying a multiplicity of stamps, comprising a shaft journaled on the plunger and two similar heads rigid with `the shaft, said heads having similar polygonal outline with notches between the consecutive sides of said outin combinationce Y whereby y line, the opposite sides of each 4notch being from the respective sides of their polygonal outline, the ends of said lugs of the tie plate being bent into engagement withsaid apertures for securing the tie plates in position. 11. In a self-inIing stamp,=in` combination with a rotatable stamp shell consisting of end heads and longitudinally peripherally 'situated connectors, a stamping device comprising a plurality of rotatable imprinting members; an-axle on which they are mounted for rotation, said axle being mounted lin the end heads, said imprinting members having laterally posipositioned inwardly i carrier comprising a tioned polygonal shoulders of less radius i than the printing periphery of said members;

a casing mounted on and positioned between said end headsaand*spring-actuated plungers in said casing having their heads adapted to seat on the faces of the polygonal shoulders of the kimprinting members respectiVely.

we have hereunto Illinois, this 28th In testimony whereof, set our hands at Chicago, day of January, 1920. y

MAX RUMPF. WILLIAM E. ,NIMZ. 

